How to change type of data in TLeaf in order to use TMVA

TMVA
1

Hello,
I have lots of root files, however, those root files have TLeaf with data type as ‘
Double_t’. And for training variables in TMVA package, only allowed data type is ‘Float_t’ or ‘I’, it is impossible for me to recreate all my root files, so I am wondering if there is a way to change data type in TLeaf to ‘Float_t’ from ‘Double_t’. Also, maybe another easy way is to add support to ‘Double_t’ data type in TMVA package and compile it. Any ideas, please?

Thanks,
Zhiyi.

2

Hi Zhiyi,

the specification of float ‘F’ or integer ‘I’ only refers to the internal treatment of the input variables. For all kinds of floating point variables (like for your Double_t) you should specify ‘F’. We will revise the documentation to make that more clear.

Best regards,
Joerg